Pole shoe assembling and securing



3,093,894 POLE SI-IGE AfifiEMBLiNG AND SECURING MAHENE Edwin A. Jurecka,2110 Chenevert, Houston, Tex. Filed May 19, 1961, Ser. No. 111,389 4Claims. (Ci. 29--2ti) This invention relates to new and usefulimprovements in a pole shoe assembling and securing machine.

It is an object of this invention to provide a device for mounting poleshoes in a housing, such as are used in electric starters andgenerators, to mount the field coils in place.

In electric starters and generators, and the like, the pole shoecompresses the field coil and fits snugly against the housing, and dueto the small tolerance in mounting the rotor in position, an expandermust be employed to apply sufiicient pressure to compress the coil andplace the pole shoe in position to be anchored to the housing bysuitable screws. Great difficulty has been experienced in applyingsufiicient pressure to the pole shoe to compress the coil to move thepole shoe to a position adjacent the inside wall of the housing toreceive the anchoring screw, and to obtain the close fit required. It isan object of this invention to provide means for readily accomplishingthis fitting.

It is another object of the invention to provide a pole shoe expanderhaving means for accomplishing the desired alignment of the pole shoewith the housing when moved into position for anchoring to the housing.

With the above and other objects in view, the invention has relation tocertain novel features of construction, operation and arrangement ofparts more particularly defined in the following specification andillustrated in the accompanying drawings, wherein:

FIGURE 1 is a side elevational view of the device, with the housing andcoils shown in cross section, and

FIGURE 2 is a cross sectional end View, taken on the line 2-2 of FIGURE1.

Referring now more particularly to the drawings, the numeral 1designates a vertical support on which the rigid lateral arms 2, 3 aremounted. The arm 3 is of substantially rectangular stock and has thespring loaded finder ball 4 mounted in the socket 5. Lateral ears 6, 6extend from the member 3 and the lever 7 is pivotally mounted thereon.An actuating arm 8 is pivotally mounted on one end of the lever 7 and isconnected to the drive shaft of a suitable power tool, such as the airjack 9.

Extending through the member 2 is the longitudinally movable screwdriving means 10 which is in alignment with the finder 4 and which hasthe extended handles 18, 18 providing means for applying pressure to therotation of the screw in anchoring the pole shoes. Any suitable meansmay be employed to apply pressure to the screw driver in setting thescrew, such as the manual means shown or by an air impact tool (notshown) or other force tools.

When it is desired to mount a coil and pole shoe in the housing 11, ascrew as 12 is mounted in the port 13 and a coil as 14 and pole shoe 15are positioned in the housing 11 and the housing positioned on themember 3 by extending one end over the extended ends of the rigid member3 and lever 7. The internally threaded screw port 16 is aligned with theport 13 by means of the finder 4 seating in the port 16 and pressure isthen applied either manually or by means of the jack 9 against one endof the lever 7, the other end of the lever 7' bearing against theopposite side of the housing 11, or the opposite pole shoe 17, if theopposing pole shoe is in the housing. The outer edges Patented June 18,1963 of one face of the rectangular member 3 bear against the arcuateface of the pole shoe 15 and align the shoe with the curvature of thehousing and as pressure is applied through the lever 7, the pole shoe 15is forced against and compresses the coil 14 and the screw driver it maybe moved against and rotated to set the screw 12 in the port 16 and byexerting the desired pressure on the screw driver it the anchoring ofthe pole shoe completed, the ball 5 yielding as the end of the screwcontacts same.

While the foregoing is considered a preferred form of the invention, itis by way of illustration only, the broad principle of the inventionbeing defined by the appended claims.

What I claim is:

1. In a pole shoe assembling and securing machine, a vertical support, alaterally extended member mounted on said support having screw drivingmeans mounted therein, another laterally extended member on said supporthaving a pole shoe screw port finder mounted therein, said pole shoescrew port finder being in alignment with said screw driving means, alever pivotally mounted on and substantially parallel with one of saidextended members, a housing in which pole shoes are to be mounted, means'for applying pressure to one end of said lever to cause the other endthereof to move against one side of said housing and to apply pressureto the member on which said lever is mounted toward the other side ofsaid housing.

2. In a pole shoe assembling and securing machine, a support having apair of extended rigidly mounted members, a screw driving means mountedin one of said members, the other of said members being rectangular andhaving a lever pivotally mounted thereon and parallel therewith, theupper ends of said lever and said last mentioned member adapted toreceive a housing in which pole shoes are to be mounted, said housinghaving screws to be seated in said pole shoes, means for applyinghydraulic pressure to one end of said lever to move the other end ofsaid lever against one side of said housing and to apply pressure to thelast mentioned rigid member to force said pole shoes towards the insidewall of said housing and permit one of said screws to be mounted in saidpole shoe by said screw driving means.

3. In a pole shoe assembling and securing machine for mounting fieldcoils and pole shoes in a housing, a rigid screw driver holding means, arigid pole shoe expanding member in alignment and parallel with saidscrew driver holding means, a lever pivotally mounted on said pole shoeexpanding member, means for applying pressure through said lever to saidpole shoe expanding member to align a pole shoe with the curvature of apole shoe housing and to move said shoe into position to receive a.screw and to be anchored to said housing by said screw driver.

4. In a pole shoe assembling and securing machine, a fixed expandingmember and a pivotally mounted member, means on the fixed member foraligning a screw port in a pole shoe with a screw port in a housing, ascrew driver in axial alignment with said aligning means, means forapplying pressure to one end of said pivotally mounted member to move apole shoe into positon to permit a screw to be mounted by said screwdriver through said housing and into said shoe.

References Cited in the file of this patent UNITED STATES PATENTS1,442,962 Miles Jan. 23, 1923 2,424,752 Heermans July 29, 1947 2,443,824Johnson June 22, 1948 June 18, 1963 T. B. EDDY 3,093,895

WIRE COIL INSTALLING TOOL Filed Oct. 16, 1961 2 Sheets-Sheet l i H |Lgum INVENTOR. THEODORE B. EDDY ATTORNEY Mam /6

1. IN A POLE SHOE ASSEMBLING AND SECURING MACHINE, A VERTICAL SUPPORT, ALATERALLY EXTENDED MEMBER MOUNTED ON SAID SUPPORT HAVING SCREW DRIVINGMEANS MOUNTED THEREIN, ANOTHER LATERALLY EXTENDED MEMBER ON SAID SUPPORTHAVING A POLE SHOE SCREW PORT FINDER MOUNTED THEREIN, SAID POLE SHOESCREW PORT FINDER BEING IN ALIGNMENT WITH SAID SCREW DRIVING MEANS, ALEVER PIVOTALLY MOUNTED ON AND SUBSTANTIALLY PARALLEL WITH ONE OF SAIDEXTENDED MEMBERS, A HOUSING IN WHICH POLE SHOES ARE TO BE MOUNTED, MEANS